System of setting paper positioning parts on a printing machine



July 25, 1950. H. F. BRAY 2,516,613

SYSTEM OF SETTING PAPER POSITIONING I Y PARTS 0N A PRINTING MACHINE Filed on. 22, 1945 e Sheets-Sheet 1 I T TO RNEIJ July 25, 195@ H. F. CRAY SYSTEM OF SETTING PAPER POSITIONING PARTS ON A PRINTING MACHINE Filed 06:. 22, 1945 6 Sheets-Sheet 2 INVENTOR.

BY flf-Mf) .6 58A 1 FTTAGNEYF Jul 25', 1950' 2,516,613

H. F. BRAY SYSTEM OF. SETTING PAPER POSITIONING PARTS ON A PRINTING MACHINE Eiled"0c t;-'22 1945 6 Sheets-Sheet 5 INVEN TOR. HE/yeY F. EBAY July 25, 1950 H. F. BRAY 2,515,613

' SYSTEM OF SETTING PAPER POSITIONING PARTS ON A PRINTING MACHINE Filed Oct. 22, 1945 6 Sheets-Sheet 4 F PA use d IN V EN TOR.

11a, 14 fiE/werfmm mfiwnmh July 25, 1950 BRAY 2,516,613

SYSTEM OF SETTING PAPER POSITIONING PARTS ON A PRINTING MACHINE Filed Oct. 22, 1945 6 Sheets-Sheet 5 fl INVENTOR.

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July 25, 1950 Filed Oct. 22, 1945 CLAMP o. b c

H. F. BRAY 2,516,613 SYSTEM OF SETTING PAPER POSITIONING I PARTS oN A PRINTING MACHINE 6 Sheets-Sheet 6 INVENTOR. lie-Mar E5194) 5&4, QM, MT

Patented July 25, 1950 "UNITED STATES PATENT OFFICE sYs'rEMoF earn-he PAPER, POSITIONING PARTS ON A PRINTING -MACHINE Henry F. Bray, V Vasli ingto'n, D 0., assignor to Addressograph -MultigraphCorporation, Cleveland, Ohio, a corporation of Delaware A'flplizttion Otiibl 22, 1945, Serial No. 623,765

6 Claims. 1

This invention relates to rotary planographic printing machines and its primary object is to provide simple means for enabling the quick and accurate setting of those parts of such machines which control the position of the paper, to cause the image to be printed in the desired location on the paper sheet.

As images on planographic master sheets are frequently in a different relative location from that desired on the sheet to be printed, the customary method has been to give an approximate setting to the portions of the machine which con trol the position of the paper; then print one or more sheets to test the location of the imageprint ed; then readjust the positioning means to change the location of the image on the paper from the trial sheet more nearly to the position desired; take another imprint and "again readjust the machine-until finally the proper position is obtained. Thus, it has usually resulted that at least three sheets of paper and frequently more are wasted and considerable time consumed before the machine is ready to start the real printing operation.

The loss of paper is increased in a machine 'having an automatic paper feed because the opera tor in feeding a test sheet through'a machine under power is very likely to feed two or three sheets before he can stop the machine.

In addition 'to the loss of paper there isthe loss in the life of the master sheet from si icc'es sive application 'of ink and repellent and making the imprints on the test sheets. When the machine is used with an inexpensive plate which has a limited life, such as are very popular for short-runs, the percentage of loss in the life of the master sheet, by"reason of the unnecessary printing of test sheets, is a considerable amount.

- The trial and error method have outlined reit nism .of another character.

2 operation as continuous as possible, especially in the case of a comparatively thin paper plate, as uniformity of the operation insures a, longer life to the plate and a better impression than where the operation is periodically interrupted to change the position of the image on the offset blanket.

I avoid the above mentioned losses in paper sheets, m-aster life, and op'erators time, and cause the production of more uniform imprints by providing a system of scales related to the master sheet, to the sheets of paper and to the printing machine, enabling the setting of the proper parts at once to cause the image to appear in the desired location on the sheet.

It is also an object of my invention to prevent confusion in the mind of the operator between the scale correlated with the master sheet and that with the paper sheet, or between the scale relating to the drum of the machine which carries the master sheet and the scale relating to the mechanism which controls the position of the paper. I avoid this confusion by providing dif--*- ferent characters of scales, the scales for the master sheet and drum being of one character and that for the paper and the adjusting mecha- For instance, .one scale may be numerical and the other scale alphabetical. V

The set of two scales of different characterrelating to the master sheet and paper may if -desired be provided on a device independent of each s'ultsalso in a considerable loss of time of the operator in making the necessary readjustments and tests. This loss' is increased in an offset printing machine Where the position of the offset cylinder is changed with each readjustment of the paper control, making it necessary to clean the image from the offset blanket every time a shift is made to change the position of the image on the paper, and there is a time loss while the machine makes the necessary preliminary rave-- luti'on's to build up the successively changed images on the blanket.

- Finally, it is desirable-in plan'o'gr'aphic offset printing, when the application of ink and repels lent to the master sheet once starts, to make the of them, but as it is also an object of my invention to simplify the matter of these scales as much as possible, and to that end I may form the set 'of scales of different character for the master sheet and paper on a marginal portion of the master sheet itself beyond the printing region, thescales thus being always readily available for use.

Finally, I propose in some installations to uti lize the scale down One longitudinal margin of the master sheet as the drum-scale as soon as the master sheet is mounted on the drum, thus avoiding the necessity of placing a special marking on the drum. In such instance While there are two sets of scales each comprising a pair of scales,- one scale of each set would be the same scale; that is to say, that subdivisions along the longitudinal edge of the master sheet when mounted on the drum in proximity to its cooperating scale on the machine is both the scale for the master sheet and the scale for the drum.

To illustrate the application of my system of scales to a rotary planog'raphic printing machine, I have chosen as an example the offset machine shown in Patent No; 2,165,231 of E. Curtis,

issued July 11, 1939, to my assignee, Addressograph-Multigraph Corporation. Reference is made to that patent for a complete description of that machine, but I will describe briefly its general characteristics so far as is shown in the accompanying drawings.

In the drawings, I have illustratedalso the cooperating pair of scales in a form of a separate strip adapted to be laid temporarily over the master sheet and over the sheet of paper, and also in the form of indicia along the margins of the master sheet. My invention and its method of operation will be fully explained in connection with the following description of the disclosure in these drawings.

In the drawings, Fig. 1 is a plan partly broken away of an illustrative offset printing machine embodying my invention; Fig. 2 is a vertical section of such machine in a plane indicated by the line 22 on Fig. 1 and disclosing various parts adjusted by means of my scales, the scales, however, not appearing in this figure; Figs. 3 and 4 are enlarged cross sections through the three drums of the offset printing machine showing the parts in two different positions; Fig. 5 is a detail illustrating the use of the clamp on the master drum for holding a difierent master from that shown in Fig. 3; Figs. 6 to 13 inclusive are diagrams, Fig. 6 showing the application of a scale for a master sheet adapted for mounting in one type of clamp; Fig. 7 indicating the same scale for a master sheet intended for a different type of clamp; Fig. 8 showing the application of another scale to the paper; Fig. 9 showing the scales on the drum and gear without any special relative setting; Fig. Iii-showing the scale for the master sheet having one style of clamp and locating the image in a certain region; Fig. 11

of clamps 21 and 28 mounted in the gap in the drum and adapted to engage the leading end and trailing end of the master sheet A. The offset drum is provided with claims 31 and 38 to engage and hold the ends of an offset blanket B, anda paper gripper 39.

' The paper gripper 39, as'illustrated, is substantially the same as that shown and described in Patent No. 2,165,231. Briefly, this gripper comprises an anvil H0 in the form of a yoke pivoted to the ofiset'drum 2B, and a series of gripper fingers H I which are secured to a rod H2 carried by the offset drum and normally drawn into engagement with the anvil by springs H3. The gripper fingers are moved away from the anvil under control of a cam i I 4 mounted on the frame plate in and which engages a roller H5 carried by a. lever H6 secured to one end of the rod H2. When the gripper fingers are open, abutments H1, integral therewith, act as stops to position the forward edge of the sheet fed by the feed rolls H and 12.

The platen drum is mounted on a shaft 4! which may be eccentrically mounted in a pivoted yoke 42 supported by springs 43 tending to push the yoke toward the offset drum. These springs 43 encircle rods 45 which extend through a cross bar I5. Suitable adjusting nuts are threaded on rods 45 and act to limit the pressure of the platen toward the offset drum. The three drums I0, 20 and 3B areprovidedwith gears 26, 3E and 43 respectively. These gears mesh with each other in succession, and eachgear has a pitch circle corresponding to that of the surface of the drum as equipped for printing. That is to say, the diameter of the pitch circle of a gear 26 is the same as the diameter of'the periphery of the master 7 sheet A on the master drum. The pitch circle is similar to Fig. 10 but for a different master sheet; Fig. 12 showing the scale for the paper locating in another region the desired position for the image; Fig. 13 showing the setting of the drum and gear corresponding to the respective image locations of Figs. 11 and 12; Figs. 14 and 15 are details illustrating the adjustment of the gear on the master drum which controls the position of the offset drum, Fig. 14 being a cross section of line I l-l4 of Fig. 15; Fig. 16 is a plan of a master sheet equipped with my sets of scales for positioning the image both longitudinally and laterally; Figs. 17 and 18 are enlarged views partly broken-away of opposite faces of a strip which may carry two scales of different character, one for the master sheet and the other for the paper; Fig. 19 is a diagrammatic illustration of indicia on the master drum corresponding to the scale of Fig. 17 and indicia on the paper controlling gear corresponding to the scale of Fig. 18.

Referring first to Figs. 1 to 5 inclusive, and 14 and 15, the frame of the machine shown includes a pair of upright plates 10 and H spaced parallel with each other by a suitable base indicated at I2 and various cross rods, some of which are shown at 13. Mounted between the plates are the three main cylinders of the offset printing machine, namely, the master drum 20, the offset drum 30 and the platen drum 40.

The master drum 20 is mounted on a supporting shaft 21, which is mounted in eccentric bearings carried by the frame plates 10 and H so that the turning of the shaft bearings may align the master drum 20 with the offset drum 3D. The offset drum may be tight or loose on its shaft 31 mounted in the frame plates.

The master drum 2!! is provided with a pair ofthe gear 36 is the same as that of the blanket B mounted on the offset drum and the pitch circle of the gear 46 is the same as that of the platen 4B. The gears 36 and 46 may be fixed to their respective drums.

The gear 26 is rigid in operation with the drum 20 but is adjustably clamped thereto to change the relation of the offset drum to the master drum. .In the embodiment shown it is the relation of this gear 26 with reference to the drum which is indicated by my special system of scales so that the relation of a sheet of paper to be gripped by the offset drum, as shown, or by the platen drum in other forms of the machine with reference to an image carried by the master sheet on the master drum may be made known prior tothe feeding of such paper to the machine.

In addition to the paper gripper 39 on the onset drum, the machine is provided with a preliminary sheet control or timing device, designated 1n. 7 This control includes upper and lower rotatable feed rolls 1| and 12 and a set of stop fingers 13. The feed roll of H is carried in a pivoted yoke 14, while the lower feed roll 12 is continuously rotated. The sheet is fed by hand or automatic mechanism between the separated rolls 1i and 12 until the forward edge of the sheet abuts the stop fingers 13. At the proper time a cam 35 on the offset drum coacts with a roller 11 on the yoke 14, rocking the yoke and causingthe upper paper feed roll 1| to come down into engagement with the top of the sheet.

anemia the open mouth of the gripper '39 tm the oflset Associated with the master drum is "a repel lent applicator system W andaninRing system operation, the master sheet A on the drum *2 received repellent from thre'arepelleht form; roll 55- and: ink from r the inking r011 65. The inked image 7 on the master sheetis then delivered= in reverse to -the blanket B." The reverse-image on the" blanket thencoacts with-a sheetof paper passing between the blanket-*dTum-and' platen roll and is printed'as a positive image-on the sheet.

The papermay befed automatically to the gripper on the oifsetdrumg as- I set out in "the patent of F.-- Eu Curtis mentioned. 'or-it may be fedmanuallyto the controlling device 101* For simplicity I have shown herein a manual j sup portion the paper. This eonsistsof'a suitable tray. or table: 80 having --side guides 8 I" adjustable laterally under the control of clamping screws 82: for laterally positioning of the paper as well asto accommodate different-"widths thereof.

The paper is discharged topassinto a suitable receptacle or receiving tray. This recep' taclei may include a Joggers as shown; for instance in Patent No. 2,341,02i -to Fi E. Curtis} issued February 8', 1944,"--to-=-my-.assignee Addressograph-lvI-ultigraph Corporation.- However; for simplicity, I have showmasimple receiving tray 90 which-.hasradiustableside' guides .91 an derthe control or clamping-screws 52'; for laterally positioning. sheets. cr te acchinmodatedifferenti widths of paper...

The paper; is. iorcibly discharged-1 train the ofi' set drum. by thexgrippen'mechanism-fl. i For a plate 95:

It will be seen that if the lateral guides sh and 9|: onvthe feeding andareceiyingi'trays rare adj usted laterally the: I lateral positicm oil the I paper with reference tetheaimageaon master sheet ma be altered;=and;=thus--.the:lateral post tion. on the imagecambe located in: the desired i position on the paper or work: sheet-. My sys- I tem of scales. ashereinarterimentioned. provide: forpositiomna thesfeeding,andireceiving mechw nism-laterally.

As indicated in; :Fig... 2;. power :is -providedby suitable motor I00 conneeted-ibya. beltrxlfltrto: a pulley H12. This pulley operatesaa pinion. m

which, through. compound-gears was.. operates a. pinion l-meshing withsth'e drumigearfi. drum I gear delivers motion to. th'E TOflSEt d-rmm and-.platen. The-rofiset drum gear-461s shownv asmeshing withra geafilzt-Whihthrbu'gh other gearing laldiills the-'lower teed rolienfll i It follower-Ermine sbo've descrihed amnse 6. mentor gearingthat when the-machine is oper ating,=a sheet' o-f paper is placed between the tworol1ers-of a feed roll, such sheet undenthe control-'of thecam on-the ofiset drum-is-gri-pped between the feed-rol-lers and-presented to-the cam-controlled-gripper onthe offset; drum and-isthen drawn through theregionof printing-contact by such gripper" and delivered tothe receiving --tr'ay.- I Accordingly, the I time I in -each cycle ofoperation; when the printing takes effect is determined by i the position of the-ofiset drum and when that drum is rotated-relativeto the master drum the location of the-image on the sheet being printed is changedwith reference' to its location on the master sheet. This rela' tive rotatiom between the-master and offset drums-is efiected by changingthe position ot the gear 26 with reference to -the master drum.- As indicated in Figs. 14- and 15 the gear 26 1s held'i'n positionon the master drum byan over hanging washer locked by a cap" screw 29. 1 The looseningof this cap screw allows the shifting of the gear as desired to change-thepositio'n ofthe onset -drum and paper controhwithreference -to-the masterdrum. IV This change in' posi tion; which has heretofore been eflected byguess-work or at best-by trial-anderror, is un der *my system effected accurately in advance of the printing and according to the positionofthe imageonthe' masterdrum and the desired position for such image on the-printed sheet. This systemI-will now describe.

Secured about the gear-2e is a scale D, Figs.. 1,

9 and 13, and se'cu-red ormountedi onthe drain adjacent thereto'is a .coacting .scale'C. The

gear 2Grmay be provided with acylindricalflange (Fig. 14) which occupies-a rabbetedredge in the: drum 20- and which provides a cylindrical surface for carrying the scale D. As shownin Figs. 14 and-1'5, this-flange is -adjus table. :by

reason of the flange. being held: by screws 20 passingthrough the slots-inthe gear, to enable the-scale to be-accurately adjusted-with reference to the gear.

To prevent confusion, I make'the'two scales C and D of difi'erent type of visual character. It :isfconvenient but notneoessary' that they-beot the same spacing. As shown, the indicia onthesca-le C are numerical. and the ind-iota onthe scaleD arealphabetical- I providecorresponding scales tormeasuring the distance down the master sheet wherethezi-mageis located andthe distance down the sheet where itis desired to print'such i'mage. Such scales are indicated at C and D respectivelyin Figs: l7 and 18. The.

scale 0 if applied to thetop of the; master sheetmayshow, for -,instan'ce,-that the. image the master sheet or mat begins in the region-desig-- nate'd 7. Then it" a measurement of'the paper or work sheet with the scale D 'ofxFi clfi dis-r" closes thatithe desired position-"of the beginning of the image on the sheetis locatedat the index D, from the top of the sheet,*it is .onlyxnecessary': to change the position-of: the gear :zfi on the drum 20-so that theinumeri'cal index FF-"on the scale D aligns with the letter D-on the scale C. This results in a partial rotarycmova:

mentflfithe ofisetdrum relative tolthe' master drum 20 and causes the gripper-and paper'eon: trol mechanism te -be so positioned and locatedrelative to their operating cams that the image comes in the selected position onthe printed sheet. I

The'two scales C and "D may; if desiredybe opposite-facesof a single measuring strip.

certain .b nk .sp ce is p v ed t top 1. each scaleto takecare of the non-printingre gions. In the case of the master sheet this is the area of the sheet held .by the leading end clamp 2'1, and in'the case-of paperorwork sheet it is the area held by the gripper 39,;which engages its forward edge. On the paper scale D I have shown this startingpoint asa line d. On the scale forthe master sheet (commonly called the mat) I have provided three different starting points as lines a, b and c, designated on the scale by corresponding indicia a, b, and c,. to accommodate three different styles of clamps, which may be employed on the master drum. I

. Both scales C and D maybe placed on the same rule or strip E. The scale C for measuring the mat is just the-same as the same spacing and;designationsas the corresponding scale C on thedrum .20. The alphabetical scale D on; the other face of the strip E for measuring the paper is the same as the scale D on the flange 25 of the gear 26.

If the mat is measured down from its top, edge to the top of the image by the scale C and a measurement is made by the scale D from the top of the sheet of paper to the desired location for the beginning of an image, then when. indicia on the drum and gear scales, corresponding to the two measured designations, are in registration, the image will come in the selected position on the paper or work sheet.

The lines on the'two scales are conveniently equidistantly spaced and each scale might have any'desired designation or indicia However, to prevent confusion it is very desirable to have the indicia on the. two scales of different character. One may naturally be Arabic notation of figures, the other could be Roman notation, but that is complex in the higher numbers, so I prefer alphabetical notation especially as twenty-six characters cover the rangeordinarily employed. However, I have indicated additional characters provided by double letters.

The feeding tray 80 is provided with a transverse scale F and the receiving tray 90 with a transverse scale G which scales are available to indicate the position of the corresponding paper guides 81 and 9! on such trays. The position of the image laterally on the sheet is most conveniently selected by placing a sheet of paper over the master sheet and holding the sheets up to the light and shifting the paper in one direction or the other, as, for instance, by the thumbs of the operators two hands, until the image is properly positioned laterally. To locate that position in a most convenient way I provide a transverse scale H across the bottom of each master sheet beyond the printing'region. This scale corresponds in spacing and designations to each of the scales F and G. I make each of these scales start from a zero point in the transverse central region of the master sheet and read in one direction by numerals and in another direction by letters. Now when the sheet of paper held over the image is laterally adjusted until the image is in the proper place, it is a simple matter to read on the scale H on one side the letter corresponding to one vertical edge of the sheet and then on the other side the numeral corresponding to the opposite edge. In Fig. 16 the sheet of paper .J- happens to have its edges come at designations Y--23 hence it is only necessary to adjust one, ofthe paper guides 81 or 91 tobe positioned at Xahdthectheratli opposite end of the machine the numerals read and: the resul .vr lhat h pa fed. r nerly positioned laterally to bring the image in the. desired eral location. Likewise ,the .ad-

be-adjusted .in.;a manner similar to the guides 9 to true .1 11 thereceivedsheets into a'proper pile. 1

isone ordinarily;observesv the scales F and G, whenlookingat them from oppositedirections,

they are located inreversed-position at the opposite ends of the machinet Thus,.in Fig; 1,';,the

numerals read from the centerto the right and.

the letters from hegenter :to the left, but at the from the center tothe left and the letters from the center, tothe. right. Accordingly, while, each scalev is read ly observedfrom .a person facing it at ,the end of the machine, the two letter scales. longitudinally align with each other and the two.

numeral scalessimilarly alignwith each other.

It will be seen, therefore, that-the transverse scales F and G enable the ready positioning of the sheetlaterallyto ,bringthe imagev in the proper lateralloca pn, and that the .measurement of the top of the image on the mat and the measurement of thedesired location for such copy on the printedsheet by the scale C andD and the corresponding adjustment of the gear with reference to the drum 2!) enables the proper location'of the printedimage vertically on the sheet. I can accordingly setthe machine in. advance toproperly position the image and thus avoid the waste of paper and time and deterioration to the master. caused by the old cut. and try method. v

As a further simplification of my operation, in place of the scales G and D on the eparate strip of. paper, I may conveniently print such scales on the master sheetin a region beyond the normal printing area. .Thus, as shown in Fig. 16, Ihave provided a numerical scale C downthe; vertical edges .ofthe master sheet. This vertical scale takes the place of a separate scale CI for measuring the image on the master sheet as its location may. readily be read directly on the mastersheet. For instance, as'shown in Fig. 16, the top of the image on the master sheet comes at the inumericalr'l 'onthe two scale C To measure-theidistance of paper I may turn the master sheet crosswise and use the alphabetical portion of .the scale H which extends across the bottom 'thereof to measure the space down from the top of the paper sheet where the image is to start;

To facilitate the use of the scale H to measure the. distancefromfthe'top of the work sheet to the. desired position of the top of the image, I make the. distancefrom the zero mark to the firstletter ..A of the. alphabetical scale I-I- equal to the distance which must be provided to care for that portion of; the work sheet which is held by thepapergripper 39. For convenience the distance between the lines of the alphabetical 'scalegD, D and'H, may. be equal to a multiple writer spacing-of one-.thirdof an inch .istoo.

(5 large aainsrementior the desired accurate: settins of the gear, hence, I prefer to'use. space of one-sixth of an inchwhichis 'sufficiently exact for-all practical-purposes, especially as the operator'mayreadily make a mental calculation of intervening designations, for instance, reading the position as half way-between 6 :and 7 or in other words 6 /2 on the masterandthus the selected gear to come between 6 and'7 on the drum. The spacing of the transverse scale may be the same as that of the longitudinal scales or different, as desired, of thespacing, though the letter half and numeral half of the transverse scale are preferably equally sub-divided.

,As a final simplification of my method, I may arrange to omit the numeral scale C on the drum and use the scale'C down the margin of the master-sheet as the drum scale. .This requires the mounting of the master before other. adjustment of the. gear. is madeand preferably locating the edge of the master as near as practicable to the gear.

If the numeral scale is" already on thedrum the master sheet maybe mounted on top of it and its scale take precedence over the scale formed on the drum. However, the spacing being the same, there is no liability of confusion if both markings are visible. Itwill be'observedthat if the numeral scale down the vertical edge of the master sheet acts as, or takes the place of the numeral scale on the drum, then while one has two pairs of scales, one for the drum and its gear and the other for the master and the paper sheet, one scale of each pair (in this case the numeral scale) would be the same number. Thus in any case there is in effect two sets of scales, one for the machine and the other for the master and paper, each set comprises two scales of respectively difierent character.

I claim:

1. In a printing machine having a printing drum, means to secure a master sheet thereon, and a member adjacent to and adjustable relative to the drum to control the up and down position of the text on a sheet to be printed, the combination of a pair of subdivided scales having identical indicia to measure the distance from the top of the master sheet to the top of the text thereon, one scale of said pair being afiixed to the drum and extending annularly thereon adjacent said adjustable member, and the other being detached from the machine, and a second pair of subdivided scales having identical indicia difiering visibly in character from the indicia of the first named pair of scales to measure the desired distance from the top of the sheet to be printed to the top of the text to be printed thereon, one scale of said last named pair being afiixed to said adjustable member and extending annularly relative to the drum parallel with and adjacent to the scale of the first named pair which is attached to the drum, the other scale of said last named pair being detached from the machine, whereby the detached scales of each pair may be used to measure the position of the top of the text relative to the top of the master sheet and the top of the sheet to be printed respectively and said member adjusted relative to said drum in accord with such measurements to thereby control the up and down position of the text on the sheet to be printed.

2. The combination according to claim 1 in which the indicia on one pair of scales is numerical and the indicia on the other pair of scales is alphabetical.

3. In a printing machine having a printing drum having meanstosecuremaster sheet thereon, and a gear adjustable about the axisof the drum to control the up and down position of the text on a'sh'eet to beprinted, andmeans to fix the gear to the drum in anadjusted'posi tion, the combination of an aunulanflange on said gear abutting one end ofthe' drumand forming a continuation of the drum circumference, a pair of identical subdivided scales having identical indicia to measure the distance from the top of-the master sheet to the top of the text thereon', one'soale'of saidpair being afiixed'to the drum and extending circumferentially thereabout adjacent the flange, and the otherofsa'id scales being detached from the machine, a second pair of identical subdivided scales having identical in dicia differing visiblyin character fromthe indicia oi the first named pairof scales to measure the desired distance from'th eto p of the sheet to be printed thereon, one scale of said last named pair being afiixed to said-flange parallelwith and adjacent to the scale ofthe first named pair which is attached to'the drum, the other scale 'oi saidlast named pair being detached from the machine, Whereby the detached scales of each pair may be used to measure'the position of the top of the text relative tofthetopbfthe master sheet and to the top of the-sh'eet "to'be printed respectively, and said gear adjusted relative to said drum in accord with such measurements to thereby control the up and down position of the text on the sheet to be printed.

4. In a printing machine having a printing drum having means to secure difierent types of master sheets thereon, and including an annular member adjacent to and adjustable about the axis of the drum to control the up and down position of the text on a sheet to be printed, the combination of a pair of identically subdivided scales having identical indicia to measure the distance from the top of the master sheet to the top of the text thereon, one scale of said pair being affixed to the drum and extending circumferentially thereabout adjacent said annular member, and the other of said scales being detached from the machine and having difiering points of beginning for different types of master sheets, and a second pair of identically subdivided scales having identicalindicia differing visibly in characterfrom the indicia of the first named pair of scales to measure the desired distance from the top of the sheet to be printed to the top of the text to be printed thereon, one scale of said last named pair being afiixed to said annular member and extending annularly relative to the drum parallel with and adjacent to the scale of the first named pair which is attached to the drum, the other scale of said last named pair being detached from the machine, whereby the detached scales of each pair may be used to measure the position of the top of the text relative to the top of the master sheet and the top of the sheet to be printed respectively and said annular member adjusted relative to said drum in accord with such measurements to thereby control the up and down position of the text on the sheet to be printed.

5. In a printing machine having a master cylinder, means thereon to secure a master sheet on the cylinder with the top thereof in a predetermined position, an offset drum, a platen drum, paper gripping means on one of said drums, a positive geared connection between said cylinder and gripper-carrying drum, said connection in- 11 eluding an annular member adjacentto and adjustable about the axis of said cylinder to permit the cylinder to be rotated relative said lastnamed drum to adjust the up and down position of the text on the sheet to be printed, the combination of a pair of subdivided scales carried by the printing machine and extending parallel with and adjacent to each other to indicate respectively the distance from the top of the master sheet to the top of the text thereon and the distance from the top of the text to the top of the sheet to be printed, the former extending circumferentially about and movable with said cylinder adjacent said annular member and the latter scale extending circumferentially about and movable with the said annular member adjacent to and parallel with the former scale, each of said scales having indicia, the indicia on one scale differing visibly in character from the indicia on the other scale, and a second pair of scales detached from the machine to measure respectively the distance from the top of themaster sheet to the top of the text and the distance from the top of the text to the top of the sheet to be printed while master sheet and sheet to be printed are removed from the machine, the former having subdivisions and indicia identical with the subdivision and indicia of the first named scale of the first named pair and the latter having subdivisions and indicia identical with those of the second named scale of such first named'pair, whereby the adjustment of the first pair of scales'relative "to each other in accord with the'meas'urements Number Name 1,451,142 Chipperfield Aug. 10, 1923 1,644,597 I Lichtenstein Oct. 4, 1927 2,172,279 Hamilton, Jr. Sept. 5, 1939 2,201,953 Dalton May 21, 1940 2,205,998 -Wescott June 25, 1940 2,364,942 Bradt Dec. 12,1944 2,401,020 Roberts 

